catkin_make
source devel/setup.sh
#source出现问题？将上一行改为下两行，并且将pkg_path改为src的绝对路径
#pkg_path="/mnt/c/Users/LanceHE/Desktop/综合设计与实践B/zhsj_B_group2_repo/gazebo仿真/trackCar_ws/src"
#export ROS_PACKAGE_PATH=$ROS_PACKAGE_PATH:$pkg_path
roslaunch car_gazebo empty_world.launch

